Long and Short Spiral Drill Bit

The structure is a straight spiral, available in three types: single-head single-spiral, double-head single-spiral, and double-head double-spiral.
The cutting tools used are shovel-shaped wear-resistant alloy bucket teeth or bucket teeth with added cutting teeth;
Mainly used for non-circulation drilling in soil layers above the groundwater level, sandy soil layers, dense sand layers containing a small amount of clay, and gravel layers with small particle sizes.